Polyvinyl chloride pipe resistant to heat, oil, acid and alkali and method for preparing same

A polyvinyl chloride, acid and alkali resistant technology, applied in the direction of pipes, rigid pipes, mechanical equipment, etc., can solve the problems of complex preparation process, short service life, poor corrosion resistance, etc., and achieve good thermal stability, low cost, good Acid resistance effect

Inactive Publication Date: 2013-03-06
JIANGSU CHENDIAN SOLAR PHOTOELECTRIC TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a heat-resistant, oil-resistant, acid- and alkali-resistant polyvinyl chloride pipe, which solves the problems of non-corrosion resistance, easy embrittlement, odor during processing, easy volatilization, easy decomposition, short service life and complicated preparation process in the existing polyvinyl chloride pipe. , technical issues such as high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Step 1: Weigh various raw materials according to the mass fraction ratio described below

[0033] Polyvinyl chloride resin PVC (S-2~S-4) 100;

[0034] Plasticizer DOP 10-45;

[0035] Plasticizer DBP 20-30;

[0036] Flame retardant TCP 20-40;

[0037] Heat stabilizer tribasic lead sulfate 1-1.5;

[0038] Heat stabilizer dibasic lead stearate 1-1.5;

[0039] Heat stabilizer barium stearate 1-2;

[0040] Heat stabilizer calcium stearate 0.5-1;

[0041] Heat stabilizer lead stearate 2-4;

[0042] Modifier nitrile rubber 20-40;

[0043] Lubricant Paraffin 0.5-1.

[0044] Step 2: Put the above raw materials into a horizontal kneader and knead the PVC resin first with a plasticizer and then add a filler for kneading. The kneading condition is that the jacket steam pressure is 0.24-0.39MPa and kneaded for 50-60min;

[0045] Step 3: Knead the material kneaded in the second step on a two-roller open mill. The temperature of the steam heating roll is about 150-170°C, the...

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Abstract

The invention provides a polyvinyl chloride (PVC) pipe resistant to heat, oil, acid and alkali and a method for preparing the same. The polyvinyl chloride pipe resistant to heat, oil, acid and alkali is composed of 100 parts of PVC, 30-75 parts of plasticizer, 20-40 parts of fire retardant, 5.5-10 parts of thermal stabilizer, 20-40 parts of modifier and 0.5-1 part of lubricant by weight. The pipe is resistant to low temperature and high temperature, high in shock resistance, good in rigidity, high in pressure resistance and resistant to corrosion, and has the characteristics of excellent acid resistance, alkali resistance, oil resistance, chemical corrosion resistance, good electrodynamic corrosion resistance, long service life, low production cost and the like; and therefore, the pipe is certainly to be used widely and may take the place of the existing material gradually.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a heat-resistant, oil-resistant, acid- and alkali-resistant polyvinyl chloride pipe and a preparation method thereof. Background technique [0002] Driven by relevant national policies, the domestic plastic pipe industry has shown a strong growth trend in recent years and has become the main force in the domestic plastics processing industry. According to the statistics of China Plastics Processing Industry Association, the current annual growth rate of China's plastic pipe market is 15%, ranking first in the world. [0003] With the popularization of the concept of humanization and the formation of a new harmonious society, polyvinyl chloride pipes have been widely used, so as to continuously improve the heat resistance, oil resistance, acid and alkali resistance of polyvinyl chloride pipes to meet the needs of daily applications is very necessary. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L9/02C08K13/02C08K5/12C08K5/523C08K3/30C08K5/098B29C47/92F16L9/12B29C48/92
CPCB29C48/625B29C48/04B29C48/875B29C48/92B29C2948/92704B29C2948/92895
Inventor 张晨张森林
Owner JIANGSU CHENDIAN SOLAR PHOTOELECTRIC TECH
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